IRRd: web UI host header injection allows password reset poisoning via attacker-controlled email links

Not analysed yet

We haven’t published our analysis of this Advisory yet. Once a person has reviewed it, this page will say what’s vulnerable, what has to be true for your app to be affected, and how to check.

Severity and exploitation

• CISA KEV Not listed.
• EPSS 0.0049, the 42nd percentile, on 5 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.

Timeline

1. 31 Oct 2026, 15:04 UTC First seen by agentprime
2. 31 Oct 2026, 15:04 UTC Confirmed by OSV

Sources

• GitHub Advisory Database: GHSA-22m3-c7vp-49fj
• OSV: GHSA-22m3-c7vp-49fj
• github.com/irrdnet/irrd/security/advisories/GHSA-22m3-c7vp-49fj
• nvd.nist.gov/vuln/detail/CVE-2026-28681
• github.com/irrdnet/irrd/commit/8408e0f1b9f47eb2f2e712d6153e32194df05fbb
• github.com/irrdnet/irrd/commit/cf62df4a49d3891e80b2879d9b324d1af050000c
• github.com/irrdnet/irrd
• irrd.readthedocs.io/en/stable/releases/4.4.5
• irrd.readthedocs.io/en/stable/releases/4.5.1

Facts on this page come from the GitHub Advisory Database (CC-BY 4.0), OSV and the other sources listed, as published. We don’t reproduce full advisory descriptions, which can contain exploit code.